well...i believe that's problem with your camera or...when testing on one pc clients are running "slowly", not smoothly, at least on my pc is like that, so maybe that's the problem.

but try with different code for 3rd person camera...

ok, I will look for another code. My PC can't be the problem:
CPU: Intel Core2Duo @ 1,95 Gh/z (overclocked fron 1,86) - 2 Core
GPU: nVidia Geforce 8800 GTS

your camera code was a problem for sure. i tried it and it was buggy. wrong code for camera you had.

yes its a single player camera code